In　order　to　modify　the　electrochemical　properties　of　Si　anode　for　lithium　ion　batteries,　a　series　of　porous　Si/Si-Fe　alloy　composites　with　different　amounts　of　Fe　doping　were　prepared　by　magnesium　reduction　process.　The　morphology　and　microstructure　of　the　as-prepared　composites　were　investigated.　The　electrochemical　performance　of　the　composites　as　anode　materials　for　lithium-ion　batteries　were　evaluated　by　galvanostatical　charge-discharge　testing.The　composites　show　a　porous　structure　with　the　uniform　distribution　of　Si-Fe　alloy　inside　the　pores　and　possess　remarkable　cycle　stability　with　a　capacity　of　1　133.5　mA·h/g　at　0.1C　after　100　cycles,　a　capacity　retention　ratio　of　66%　and　a　reversible　capacity　of　776.9　mA·h/g　at　1C.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.